(Solved): Heptane and water do not mix, and heptane has a lower density \( (0.684 \mathrm{~g} / \mathrm{mL}) ...

Heptane and water do not mix, and heptane has a lower density \( (0.684 \mathrm{~g} / \mathrm{mL}) \) than water \( (1.00 \mathrm{~g} / \mathrm{mL}) . \mathrm{A} 100-\mathrm{mL} \) waduated cylinder with an inside diameter of \( 3.04 \mathrm{~cm} \) contains \( 36.4 \mathrm{~g} \) of heptane and \( 32.2 \mathrm{~g} \) of water. What is the combined height of the two liquid layer in the cylinder? The volume of a cylinder is \( \pi r^{2} h \), where \( r \) is the radius and \( h \) is the height. \( \mathbf{c m} \)